ascertain
1. establish after a calculation, investigation, experiment, survey, or study (Freq. 4) - find the product of two numbers - The physicist who found the elusive particle won the Nobel Prize • Syn: determine, find, find out • Derivationally related forms: ascertainable, find (for: find), finding (for: find), determination (for: determine) • Hyponyms: gauge, translate, rectify, redetermine, sequence, refract, count, number, enumerate, numerate, admeasure, situate, locate • Verb Group: determine, check, find out, see, watch, learn, discover, find • Verb Frames: - Somebody ----s something - Somebody ----s whether INFINITIVE 2. be careful or certain to do something; make certain of something (Freq. 1) - He verified that the valves were closed - See that the curtains are closed - control the quality of the product • Syn: see, check, insure, see to it, ensure, control, assure • Derivationally related forms: check (for: check) • Hypernyms: verify • Hyponyms: proofread, proof, control, double-check, cross-check, cinch, card, spot-check, cover • Verb Group: determine, check, find out, see, watch, learn, check off, mark, mark off, tick off, tick, control, verify • Verb Frames: - Somebody ----s that CLAUSE - Somebody ----s to INFINITIVE (for: see) 3. find out, learn, or determine with certainty, usually by making an inquiry or other effort - I want to see whether she speaks French - See whether it works - find out if he speaks Russian - Check whether the train leaves on time • Syn: determine, check, find out, see, watch, learn • Derivationally related forms: ascertainable, check (for: check), determination (for: determine) • Hyponyms: test • Verb Group: see, check, insure, see to it, ensure, control, assure, determine, find, find out • Verb Frames: - Somebody ----s whether INFINITIVE - They ascertain whether there was a traffic accident 4. learn or discover with certainty • Derivationally related forms: ascertainable • Hypernyms: learn, hear, get word, get wind, pick up, find out, get a line, discover, see • Hyponyms: price • Verb Frames: - Somebody ----s that CLAUSE - They ascertain that there was a traffic accident
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